python code

执行动态语句

执行字符串中的代码
http://www.cnblogs.com/fanweibin/p/5418817.html

#!usr/bin/env python
#coding:utf-8
  
namespace = {'name':'xs','data':[18,73,84]}
  
code =  '''def hellocute():return  "name %s ,age %d" %(name,data[0],) '''
  
func = compile(code, '<string>', "exec")
  
exec func in namespace
  
result = namespace['hellocute']()
  
print result

动态加载模块

根据配置信息加载模块，

import config as conf
from importlib import import_module as im

import tornado.web as web
import os

urlpatterns = []

for app in conf.INSTALLED_APPS:
    cmd = app + '.urls' 
    urlpatterns = urlpatterns + getattr(im(cmd), 'urlpatterns')